fix 兼容低版本浏览器插件默认关闭

application/admin/view_new/system/config.html

@@ -135,9 +135,9 @@
                         <label class="layui-form-label">{:lang('admin/system/config/site_polyfill')}：</label>
                         <div class="layui-input-inline w300">
                             <input type="radio" name="site[site_polyfill]" value="0" title="{:lang('close')}" {if
-                                condition="$config['site']['site_polyfill'] eq 0" }checked {/if}>
+                                condition="!isset($config['site']['site_polyfill']) or $config['site']['site_polyfill'] eq 0" }checked {/if}>
                             <input type="radio" name="site[site_polyfill]" value="1" title="{:lang('open')}" {if
-                                condition="!isset($config['site']['site_polyfill']) or $config['site']['site_polyfill'] eq 1"
+                                condition="$config['site']['site_polyfill'] eq 1"
                                 }checked {/if}>
                         </div>
                         <div class="layui-form-mid layui-word-aux">{:lang('admin/system/config/site_polyfill_tip')}